US Bridges

Ramp to 91st. Ave. over Loop 101

Good

Maricopa County, Arizona · 0.3 M N Grand Ave @ L101 · Structure no. 02646

Built
2002
23 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
932 ft
5 main spans
Daily traffic
9,369
2021 count
Owner
State
State Highway Agency

About this bridge

Ramp to 91st. Ave. over Loop 101 is a prestressed concrete continuous box beam or girders - single or spread carrying Ramp to 91st. Ave. over Loop 101 in Maricopa County, Arizona. It was built in 2002, so it is 23 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,369 vehicles a day, roughly 5% of them trucks, projected to reach 9,379 by 2041. The structure is 932 ft (284.1 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRamp to 91st. Ave.
CrossesLoop 101
Location0.3 M N Grand Ave @ L101
RouteState Highway 101
CountyMaricopa County
StateArizona
Coordinates33.5995, -112.2557
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating92 US tons
Inventory rating55 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length932 ft (284.1 m)
Longest span207 ft (63.1 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,369 (2021)
Projected traffic9,379 by 2041
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp to 91st. Ave. over Loop 101 built?

It was built in 2002, making it 23 years old in 2025.

What condition is Ramp to 91st. Ave. over Loop 101 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does Ramp to 91st. Ave. over Loop 101 carry?

About 9,369 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Ramp to 91st. Ave. over Loop 101?

The structure is 932 ft (284.1 m) long with a longest span of 207 ft (63.1 m) and a deck 31 ft wide.

Who owns Ramp to 91st. Ave. over Loop 101?

It is owned by the State Highway Agency.